Pumping apparatus for sumps



Nov. 28, 1950 R. H. THOMAS- PUMPING APPARATUS FOR SUMPS I Filed 001;. 26. 1946 a RMW mn w m w WMMW mr EYH B Patented Nov. 28, 1950 PUMPING APPARATUS FOR SUMPS Richard B. Thomas, Hamilton, Ohio, assignor to Economy Pumps, Inc., Hamilton, Ohio, a corporation of Illinois Application October 26, 1948, Serial No. 705,891

7 Claims.

This invention relates to a pumping apparatus for sumps and the like and concerns itself primarily with a receiving and discharging unit through which sewage passes into the sumps and through which it is discharged from the sump.

It is an object of this invention to provide a receiving and discharging unit which can be separately manufactured and sold for use with a new pumping installation or with a pumping installation already in use, and which can be installed in the sump or away from the sump provided it is connected with the sewage.

A further object is to provide a simple device that can be easily installed in almost any installation.

With these and other objects in view, which will become apparent as the description proceeds, this invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawing which illustrates a preferred form of this invention and in which similar reference numerals refer to similar features in the different views:

Fig. 1 is an elevational view of a sump receiving and discharging unit involving this invention.

Fig. 2 is an enlarged sectional view through a tank or sump equipped with a pumping apparatus involving this invention.

In referring now to the drawing, there is shown a sump receiving and discharging unit '3 which it will be noted is a separate or independent structure that can easily be incorporated into any sump apparatus. In Fig. 2, there is illustrated one way in which such unit can be incorporated in a sump pumping apparatus, and in referring to said figure it will be noted that a pipe section 4 upon the lower end of the unit is attached to the discharge pipe 5 of a pump 5 supported in the tank or sump 1 by means of a column suspended from the top of the tank. The pump communicates with the tank through an inlet '9.

The unit 3 is shown as somewhat oblong having narrow end walls 3a and 3b and relatively wide side walls 30. An access aperture in which is provided in the end wall 3b is covered by a removable plate li. The lower end of the unit converges as indicated at i2 for forming a suitable connection with the pipe 4.

Upon the top of the unit, there is a sewage inlet pipe 13 which extends through the roof or top of the sewage tank and spaced from the inlet pipe 13, there is a discharge pipe I! on the top of the unit which also extends through the roof 2 of the tank. This discharge pipe II is provided with an upwardly and laterally sloping stub pipe it which forms a rodding aperture through which a hooked rod or the like can be inserted for cleaning out rags and such matter from the unit. A cover It confined by a clamp I1 and screw II is adapted for closing the rodding aperture in the stub pipe.

Within the unit 3, there is an interior transverse wall It which is spaced a distance from the end wall 3a. This wall ll slopes inwardly at its lower portion as indicated at 20 and this sloping portion terminates in a horizontal portion 2i extending across the unit. This horizontal portion is provided with an aperture 22 over which a conical basket screen 23 is positioned. This screening portion divides the casing chamber into a clear liquid chamber below and a mixed liquid chamber above. The vertical portion of the wall I! is perforated or provided with parts 24 for ,the escape of clear fluid into the passage 25 located between the outer end wall to and the interior wall It. A flap valve 28 is hinged upon the interior sloping portion I! of the wall to opposite a seat 21 upon the horizontal portion Ii 01 the interior wall. This valve is controlled by fluid flow for opening and closing the clear fluid passage, as will later more fully appear. The end wall 3a of the unit may be perforated as indicated at 28 to carry off any overflow of fluid.

It will be noted that the interior wall I! extends from the left hand side of the inlet pipe l3. Upon the right hand side of the inlet pipe, there depends a short wall 29 having its lower end bent toward the wall l9, as indicated at 29a. A flap valve 30 is hinged to the wall 29 at the elbow of the bent portion and is adapted for controlling the passage 3| between the walls is and 29 which passage forms an inlet for the sewage. The wall I!) is provided with a valve seat 32 for the valve 30 which is controlled by the flow of fluid.

A motor 33 upon the tank is operatively connected to the pump and this motor may be controlled by a float switch 34 which is operated by a rod 35 having a float 3B confined between suitable stops 31.

In use, sewage will enter pipe l3 and into passage 3| where clear fluid can pass through the ports 24 and into the clear fluid passage 25. The mixed fluid will pass down through the basket screen into the converging portion of the unit where it will merge with the clear fluid and pass through pipe I and pump 6 to the tank.

When the fluid in the tank rises to a predetermined height, it will close the float switch and start the motor. for operating the pump which will elevate fluid through pipe 4 and into the unit I; the pressure of this fluid will close valve 28. This discharged fluid will then pass through screen 23 and into the chamber above the wall portion 2| and the pressure thereof will close valve 30. The fluid from such chamber will then pass through the discharge pipe M which may be connected to a carry away pipe not shown. when the float drops and opens the switch, the motor and pump will stop and the pressure will drop so that the two flap valves will open by gravity or they may be forced open by incoming fluid.

It is characteristic of this invention that the unit can be manufactured and completely as sembled in a shop and shipped ready for installation in a pumping system. This installation which requires not much more than the attach merit of pipe 1 to the discharge pipe of the pump, indeed very simple and requires very little time.

It will also be apparent that in the use 01 a clear fluid passage such as the passage 25, fluid will always pass through the unit even though there be some clogging at the basket screen.

Thus there would be very little liability of causing total clogging of the apparatus since the heavy matmr will sink without any tendency to clog parts it. Of course, in the event of serious clogging at the basket screen, the cleaning out aperture through stub pipe it can be opened and clogging material extracted by means of a suitable instrument.

I am aware that many changes may be made and various details of construction may be modi fled without departing from the principles of this invention, so I do not propose limiting the patent granted thereon otherwise than necessitated by the appended claims.

I claim as my invention:

1. In a pumping apparatus of the class described. a liquid receiving and discharging unit having an opening in its bottom adapted for attachment to the discharge pipe of a pump, said unit comprising a casing having a liquid inlet pipe and a liquid discharge pipe extending in parallel relation therefrom, a screening partition dividing the casing into a clear liquid chamber and a mixed liquid chamber, means in said casing for shutting oil the inlet flow when liquid is being discharged and a clear liquid channel having a screen adjacent the inlet pipe and leading to said clear liquid chamber and a flap valve for controlling the flow through said channel.

2. In a pumping apparatus, a liquid receiving and discharging unit comprising a casing having an opening in its bottom adapted for attachment to the discharge pipe of a pump, said casing having a liquid inlet pipe and a liquid outlet pipe extending therefrom, a short wall in said casing in a plane between said inlet and outlet pipes for defining an inlet passage and an outlet passage, a flap valve for controlling the inlet passage, an interior perforated wall spaced from the wall of said casing and forming a clear liquid passage therebetween and forming one side of said inlet passage, and a transverse screening partition between said clear fluid passage and the other side of said casing.

3. In a pumping apparatus of the class described comprising a pump having a discharge pipe, 8. liquid receiving and discharging casing having a converging lower end connected to said discharge pipe, an inlet pipe and a discharge pipe extending from the top of said casing, means deflning a valve controlled passage extending from said inlet pipe to a point within said casing, a part of said means having a horizontal portion extending across said casing, said horizontal portion having a flow aperture and said part of said means forming a clear fluid passage within the wall of said casing.

4. In a pumping apparatus of the class described comprising a pump having a discharge pipe, a liquid receiving and discharging casing having a connection with said discharge pipe, an inlet pipe and a discharge pipe extending from said casing, said casing having an interior wall spaced from the casing wall and defining a clear liquid channel therebetween, said interior wall having perforations for the flow or liquid into said channel and having an apertured portion extending transversely of said casing, said channel having a flap valve below said transversely extending portion, a cone screen positioned over the aperture in said transversely extending portion, and means cooperating with said wall for defining a valve controlled inlet passage for said inlet pipe.

5. In a pumping apparatus of the class described, a liquid receiving and discharging unit comprising a casing having an opening in its bottom adapted for attachment to the discharge pipe -of a pump, an inlet and a discharge pipe extending in parallel relation from said casing, means within said casing for controlling the inlet and outlet flow thru said pipes, said casing having a partition with a vertical perforated portion and a horizontal portion spaced from the bottom of the casing and having an opening, a conical screen covering said opening, the space below said horizontal portion of said partition forming a clear liquid chamber and said perforated vertical portion forming a channel passage with one end wall of said casing extending to said clear liquid chamber and a valve for controlling the flow thru said channel passage.

6. In a pumping apparatus of the class described comprising a pump having a discharge pipe, a liquid receiving and discharging unit connected to said discharge pipe, said unit comprising a casing having a fluid inlet pipe and a fluid discharge pipe extending in parallel relation therefrom and having a converging portion meeting said pump discharge pipe, means within said casing for controlling the inlet and outlet flow of fluid, an angular partition in said casing forming a mixed liq-uid chamber communicating with said inlet pipe and said outlet pipe and a clear liquid chamber communicating with said pump discharge pipe, said partition having an aperture for discharging fluid from said mixed liquid chamber to said clear liquid chamber, screening means covering said aperture, said partition having a perforated section for the passage of clear liquid from the upper portion of said mixed liquid chamber to said clear liquid chamber; and said partition forming a. passage with one end wall of said casing adjacent said perforated section.

'7. In a pumping apparatus of the class described comprising a pump having a discharge pipe, a liquid receiving and discharging unit adapted for attachment to said discharge pipe, at fluid inlet pipe and a fluid discharge pipe extending in parallel relation from said casing, a partition in said casing dividing the same into a mixed liquid chamber communicating with said fluid inlet pipe and said fluid discharge pipe and a clear liquid chamber communicating with said pump 5 h 6 discharge pipe, said partition having a screened UNITED STATES PATENTS passage communicating with said clear liquid Number Name Date chamber, said partition having a perforated sec- 1 607 246 Durdin Nov 16 1926 tion for the passage of clear liquid from the up- 1'774234 La Bour 1930 per portion of said mixed liquid chamber to said 5 2:401:25} Lannert 1946 clear liquid chamber.

RICHARD H. THOMAS.

REFERENCES CITED The following references are of record in the 10 file of this patent: 

